Took quite a bit of time to track this down. If you change your Central Admin Default Zone Url after configuring the User Profile Synchronization Service, the User Profile Sync will fail.  The UI for the User Profile Service Application will not...

Ran into a problem recently while helping out on a project where web part pages were being dynamically created from a feature receiver.  Once the pages were created, everything works, except for the Title Bar Properties icon in the ribbon. When you...